São José de Piranhas weather in September

In September, São José de Piranhas sees average daytime highs of 35°C and overnight lows near 22°C, with 1 mm of rain across 0.4 wet days and about 12 hours of daylight. It is the 4th-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 35°C through the month. The sky is clear or mostly clear about 65% of the time in September, and the air most often feels comfortable.

Daylight stretches from about 11 h 54 min at the start of September to 12 h 06 min by month's end. Set against the rest of the year, September is São José de Piranhas's 1st-clearest and 3rd-windiest month. For the whole year in context, see São José de Piranhas's year-round climate.

Daytime high
35°
4th warmest
Overnight low
22°
4th coldest
Rainfall
1 mm
0.4 wet days
Daylight
12 hours
5:29 AM – 5:27 PM
Cloud cover
32%
1st clearest
Wind
15 km/h
3rd windiest
Solar energy
6.84 kWh/m²
Travel score
3.6
out of 10

São José de Piranhas is human settlement in Brazil.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 35°C through the month.

A typical September day in São José de Piranhas reaches about 35°C in the afternoon and slips back to 22°C overnight — a 13°C spread between the day's warmth and the night's chill. On most days the high lands between 33°C and 36°C. Set against its neighbours, September runs about 2°C warmer than August and about 1°C cooler than October.

15°20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
13421
23421
33421
43421
53421
63421
73421
83421
93421
103421
113422
123422
133422
143422
153422
163422
173522
183522
193522
203522
213522
223522
233522
243522
253522
263522
273522
283522
293522
303522

How September really feels in São José de Piranhas

Once humidity and wind are folded in, September averages 30 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
30
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

São José de Piranhas weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan33° / 24°9912.612.43.1
Feb33° / 23°12113.312.23.3
Mar32° / 23°15817.8123.4
Apr32° / 23°9713.611.83.8
May31° / 22°507.511.74.5
Jun31° / 21°193.511.65.1
Jul31° / 20°8211.65.1
Aug33° / 21°50.511.84.5
Sep35° / 22°10.4123.6
Oct35° / 23°6112.23.0
Nov35° / 24°61.312.32.9
Dec35° / 24°274.512.43.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 65% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 18% of September, with mostly cloudy or overcast conditions the remaining 16%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18119
28119
38119
48119
58119
68020
78020
88020
98020
108020
118020
128020
138119
148119
158119
168317
178317
188416
198515
208614
218713
228713
238812
248812
258911
268911
278911
289010
298911
308911

Chance of precipitation in September

Any precipitation

São José de Piranhas gets around 1 mm of rain over 0.4 wet days in September, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 1% and peaks near 2% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
11
21
31
41
51
61
71
81
91
101
111
121
131
142
152
162
171
181
192
202
212
222
231
241
251
261
271
281
291
301

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels comfortable — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the comfortable band about 50% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1351442
2450442
3450442
4450452
5449452
6449452
7449452
8449452
9448452
10548452
11548452
12548452
13548452
14548452
15549452
16549452
17549441
18550441
19550441
20550441
21551431
22551431
23551431
24552421
25552421
26552421
27551422
28551422
29551422
30452422

Wind in September

Winds average 15 km/h in September.

Across September, daily wind ranges from about 14 km/h on the calmest days to 16 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
116light breeze
216light breeze
316light breeze
416light breeze
516light breeze
616light breeze
716light breeze
816light breeze
916light breeze
1016light breeze
1116light breeze
1215light breeze
1315light breeze
1415light breeze
1515light breeze
1615light breeze
1715light breeze
1815light breeze
1915light breeze
2015light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2515light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 54 min at the start of September to 12 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over September. Sunrise moves from 5:38 AM to 5:22 AM, and sunset from 5:30 PM to 5:25 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.95:385:30
211.95:375:29
311.95:375:29
411.95:365:29
511.95:365:29
611.95:355:29
711.95:355:29
811.95:345:29
911.95:335:28
1011.95:335:28
1111.95:325:28
1211.95:325:28
1311.95:315:28
1411.95:315:28
1512.05:305:27
1612.05:295:27
1712.05:295:27
1812.05:285:27
1912.05:285:27
2012.05:275:26
2112.05:275:26
2212.05:265:26
2312.05:255:26
2412.05:255:26
2512.05:245:26
2612.05:245:26
2712.05:235:25
2812.05:235:25
2912.05:225:25
3012.15:225:25

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.84 kWh/m².

For context, solar energy here swings from a low near 4.76 kWh/m² to a high of 7.14 kWh/m² in October across the year — September's 6.84 kWh/m² sits near the top of that range.

02468151015202530
Solar energy (kWh/m²)Level
16.5Intense
26.5Intense
36.5Intense
46.5Intense
56.5Intense
66.6Intense
76.6Intense
86.6Intense
96.6Intense
106.7Intense
116.7Intense
126.7Intense
136.7Intense
146.8Intense
156.8Intense
166.8Intense
176.9Intense
186.9Intense
196.9Intense
207.0Intense
217.0Intense
227.0Intense
237.1Intense
247.1Intense
257.1Intense
267.1Intense
277.2Intense
287.2Intense
297.2Intense
307.2Intense
Planning a trip in September

Hazard calendar for São José de Piranhas

In seasonPeak

None of São José de Piranhas's seasonal hazards are active in September. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

São José de Piranhas's rainy season runs January–April, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit São José de Piranhas?

Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

3.6
Sightseeing
6th-best month of the year
7.4
Beach & pool
4th-best month of the year

September is a weaker month for outdoor sightseeing in São José de Piranhas. The water and warmth also suit a beach or pool day.

What to pack for São José de Piranhas in September

From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In September, São José de Piranhas sees daytime highs around 35°C and nights near 22°C. Pack light clothes and sun protection.

light clothessun protection

UV index in São José de Piranhas in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in São José de Piranhas peaks around March 13 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 15 at about 10 (very high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeMar 13UV 15Jul 15UV 10
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar15Extreme
Apr13Extreme
May11Extreme
Jun10Very high
Jul10Very high
Aug10Extreme
Sep13Extreme
Oct13Extreme
Nov12Extreme
Dec12Extreme

Air quality in São José de Piranhas in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in São José de Piranhas is worst in November — around 18 µg/m³ PM2.5 (moderate), about 4.7× the cleanest month (July, 4 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateNov 1418 µg/m³Jul 164 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb9Good
Mar9Good
Apr9Good
May7Good
Jun5Good
Jul4Good
Aug5Good
Sep9Good
Oct15Moderate
Nov18Moderate
Dec13Moderate
Location & terrain

Where is São José de Piranhas?

São José de Piranhas sits at 7.1°S, 38.5°W, 344 m above sea level, in Brazil. The nearest listed city is Cajazeiras, 26 km away.

Topography around São José de Piranhas

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of São José de Piranhas.

Within 3 km, the terrain around São José de Piranhas has significant variations in elevation — a maximum elevation change of 348 m around an average of 364 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 571 m; within 80 km, large variations in elevation — a maximum elevation change of 837 m.

The land around São José de Piranhas is covered by grassland (47%) and shrubs (39%) within 3 km, shrubs (55%) and grassland (24%) within 16 km, and shrubs (60%) and grassland (24%) within 80 km.

3 km
348 m
16 km
571 m
80 km
837 m
treesshrubsgrasslandcroplandartificial surfaceswater
September weather nearby: Cajazeiras 26 km · Barro 31 km · Mauriti 42 km · Itaporanga 44 km · São João do Rio do Peixe 44 km · Conceição 49 km · Sousa 50 km · Milagres 53 km

Brazil travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / N
127 / 220 V · 60 Hz
Prices
≈ 46% of US
price level, 2025
GDP per capita
$10,713
2025
Happiness
6.6 / 10
World Happiness, 2025
Safe drinking water
89%
of population, 2024
Homicide rate
19.3
per 100k, 2023
Road deaths
16
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 482
Religion
Roman Catholic 57%Evangelical 27%none 9%other 4%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for São José de Piranhas (-7.1206°, -38.5019°, elevation 344 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).